撤单曲线

{，源码}   

卖出撤单:WIDTHDRAWORDER(2),colorred,linethick1;   

买进撤单:WIDTHDRAWORDER(1),colorgreen,linethick1;   

  

撤卖单累计:sum(卖出撤单,0)/20,colorblue,linethick2;   

撤买单累计:sum(买进撤单,0)/20,colorwhite,linethick2;   

净撤量:撤卖单累计-撤买单累计;